Reyrolle Protection Devices 7SR4 Duobias Transformer Protection Relay Energy Management Unrestricted
Unrestricted Siemens Protection Devices Limited
7SR4 Duobias Transformer Protection Relay User Interface 0 character x 4 line backlit LCD Menu navigation keys 3 fixed LEDs 16, 4 or 3 Programmable Tri-colour LEDs (Option) Monitoring Functions Description Our new generation of integrated transformer protection relays are designated the 7SR4 series. The relays utilise years of numeric relay protection experience with the Duobias family of products. Housed in 4U high, size E8, E10 or E1 cases, these relays provide protection, control, monitoring, instrumentation and metering with integrated input and output logic, data logging & fault reports. Communication access to relay functionality is via a front USB port for local PC connection or rear electrical RS485 port for remote connection. Additional rear port options are available. Function Overview Standard Functionality BF Circuit Breaker Fail 64H High Impedance REF 74TCS/CCS Trip/Close Circuit Supervision HBL Inrush Detector HBL5 Overfluxing Detector 87BD Biased Differential (Windings) 87HS Current Differential High-Set 8 Settings Groups Password Protection levels User Programmable Logic Equations, via HMI Graphical Programmable Logic, via pc application Self Monitoring Optional Functionality 4 Over-Fluxing 7/59 Under/Over Voltage 37/37G Undercurrent 46BC Open Circuit 46NPS Negative Phase Sequence Overcurrent 49 Thermal Overload Instantaneous Overcurrent G/N Instantaneous Earth Fault 51 Time Delayed Overcurrent 51G/N Time Delayed Measured Earth Fault /SEF 59N Neutral Voltage Displacement Under/Over Frequency Primary current phases and earth Secondary current phases and earth Relay Operate and restraint currents Positive Phase Sequence (PPS) Current Negative Phase Sequence (NPS) Current Zero Phase Sequence (ZPS) Current Thermal status Primary Single phase voltage* Secondary single phase voltage* Data logging and Demand Metering Frequency & fluxing* Binary Input/binary output and virtual I/O status Trip circuit healthy/failure Time and date Fault records Event records Waveform records Circuit breaker trip counters I t summation for contact wear * Optional voltage measurements from single phase VT input Data Communications Standard Communication access to relay functionality is via a front USB port for local PC connection or rear electrical RS485 port for remote connection Optional Rear ST fibre optic ports ( x Tx/Rx) + IRIG-B port 1 Rear RS485 + IRIG-B port 1 Rear RS3 + IRIG-B port rear electrical Ethernet RJ45 connectors rear optical Ethernet duplex LC connectors Protocols IEC60870-5-103, Modbus RTU, and DNP 3.0 protocols. User selectable with programmable data points. Optional IEC618 ethernet with user selectable RSTP, HSR & PRP operation. Unrestricted Siemens Protection Devices Limited 3
Description of Functionality BF Circuit Breaker Fail The circuit breaker fail function may be triggered from an internal trip signal or from a binary input. Line and neutral currents are monitored following a trip signal and an output is issued if any current is still detected after a specified time interval. Alternatively, if the trip is from a mechanical protection the circuit breaker position can be used to determine a failure. A second time delay is available to enable another stage to be utilized if required. An input is also available to bypass the time delays when the circuit breaker is known to be faulty. 64H Restricted Earth Fault - scheme The measured earth fault input may be used in a high impedance restricted earth fault scheme. Required external series stabilising resistor and non-linear voltage limiting shunt resistor can be supplied. Circuit Breaker Maintenance For each winding two circuit breaker operations counters are provided. The Maintenance Counter records the overall number of operations and the Delta Counter the number of operations since the last reset. I t summation Counters provide a measure of the contact wear indicating the total energy interrupted by the circuit breaker contacts. Each counter has a user set target operations count which, when reached, can be mapped to raise Alarms/ Binary Outputs. These counters assist with maintenance scheduling. Function LED s 16 or 4 user programmable tri-colour LED s are provided eliminating the need for expensive panel mounted pilot lights and associated wiring. Each LED can be user set to red, green or yellow allowing for clear indication of the associated function s state. A slip-in label pocket along-side enables the user to insert his own notation. A printer compatible template is available. 74TCS/CCS Trip/Close Circuit Supervision The trip and close circuit(s) can be monitored via binary inputs. Circuit failure raises an HMI alarm and output(s). HBL Inrush Detector Where second harmonic current is detected (i.e. during transformer energisation) user selectable elements can be blocked. HBL5 Overfluxing Detector Fifth Harmonic Detectors can be user selected to block the Biased Differential Elements. 87BD Biased Differential The differential characteristic incorporates two bias stages the first stage for steady state errors i.e. tap position and CT ratios the second stage for transient errors i.e. CT saturation. 87HS High-Set Differential High speed differential elements provide protection against high levels of internal fault current. Fig. 1: Tri-colour LED s Programmable Logic The user can map Binary Inputs and Protection operated outputs to Function Inhibits, Logic Inputs, LEDs and/or Binary Outputs. The user can also enter up to 16 equations defining scheme logic using standard functions e.g. Timers, Latches, AND/OR gates, Inverters and Counters. Each Protection element output can be used for Alarm & Indication and/or tripping. In addition, the Reydisp Manager PC application provides graphical programming of user logic within the device. Unrestricted Siemens Protection Devices Limited 4
Optional Functionality 4 Over-Fluxing Two elements each provide a definite time lag (DTL) characteristic, the third element provides a user defined characteristic. Operates if Volts/Hertz ratio is above setting for duration of delay. 7/59 Under/Over Voltage Each element has settings for pickup level, drop-off level and Definite Time Lag (DTL) delays. Operates if voltage exceeds setting for duration of delay. This function can be used within load shedding schemes. 37/37G Undercurrent Each element has settings for pickup level and Definite Time Lag (DTL) delays. Operates if current falls below setting for duration of delay. 46NPS Negative Phase Sequence Overcurrent Two DTL and two inverse/dtl elements are provided. NPS Current elements can be used to detect unbalances on the system or remote earth faults when a delta-star transformer is in circuit. 46BC Open Circuit Each element has settings for pickup level and DTL delay. With the circuit breaker closed, if the NPS:PPS current ratio is above setting this could be due to an open circuit. 49 Thermal Overload The thermal algorithm calculates the thermal states from the measured line currents. Outputs are available for thermal overload and thermal capacity. /51 Phase Fault INST/DTL and 51 IDMTL/DTL elements provide overcurrent protection, each with independent settings for pickup current, time-multiplier (51) and time-delays. IEC, ANSI or user defined Time Current Characteristics can be selected. The IDMT stage has a user programmable DTL or shaped current/time reset characteristic, to improve grading with electromechanical protection. G/51G/N/51N Earth Fault Two earth fault measurement modes are available. One mode directly measures the earth current from an independent CT, or the residual connection of the 3 line CTs (G/51G). The second mode derives the earth current internally from the 3 phase CTs (N/51N). INST/DTL and 51 IDMTL/DTL elements provide overcurrent protection, each with independent settings for pickup current, time-multiplier (51) and time-delays. IEC, ANSI or user defined Time Current Characteristics can be selected.. The IDMT stage has a user programmable reset characteristic either DTL or shaped current/time reset characteristic to improve grading with electromechanical protection. 59N Neutral Overvoltage One element provides a definite time lag (DTL) characteristic; the second element provides an inverse/dtl characteristic. Operates if Neutral voltage exceeds setting for duration of delay. Neutral overvoltage can be used to detect earth faults in high impedance earthed or isolated systems. Under/Overfrequency Each element has settings for pickup level, drop-off level and Definite Time Lag (DTL) delays. Each element operates if frequency exceeds setting for duration of delay. Typically applied in load shedding schemes. Data Acquisition - Via Communication Interface Sequence of event records Up to 00 events are stored and time tagged to 1ms resolution. Fault Records Measured quantities for the last 100 relay trip fault records are stored with time and date of trip. The HMI can display the last 10 fault records with time and date of trip, measured quantities and LED status. Waveform recorder The waveform recorder stores data for all analogue input values along with the states of protection functions, binary inputs/outputs and LEDs. Waveform record storage can be triggered from operation of a user selected protection function, binary input or via data communications. The duration of record storage is user configurable. 100 records of 1,, 5 or 10 seconds are stored. The ratio of prefault to post fault storage can be set by the user. Demand Monitoring A record of demand is available. The demand minimum, maximum and average values for currents, frequency and if applicable, voltages over a user selectable period of time is displayed and available via data communications. Typically this is set as a rolling value for the last 4 hours. Data Log Provides a rolling record of current and voltage (where applicable), recorded at a user selectable interval and stored to provide data in the form of a Data Log which can be downloaded for further analysis. A typical application is to record 15 minute intervals over the last 7 days. Real Time Clock The time and date can be set and are maintained while the relay is de-energised by a back up storage capacitor. The time can be synchronized from a binary input pulse, via the data communication channel(s) or from the optional IRIG-B port. Unrestricted Siemens Protection Devices Limited 5
Serial Communications Reydisp Manager The relay offers a USB serial port as standard on the front of all units. All of the relays functions can be set on a PC using Reydisp Evolution via the relay USB port. The connection is made with a USB cable and operates with a plug and play connection, so no pre-setting of the relay is required. The front port can be switched off or set to use either the MODBUS-RTU, IEC60870-5-103, DNP3.0 (optional) or ASCII protocols for testing purposes. A rear RS485 electrical connection is available on all units for system interface connections. An internal terminating resistor is provided, which can be connected into the circuit by adding a wire loop between the relevant terminals. Reydisp Manager provides the functionality of Reydisp Evolution and also provides project management of multiple devices to allow engineering of IEC618 projects. It also provides access to user logic within the devices via an easy to use graphical interface. To Control System 14 16 18 14 16 18 0 Ext Wire loop to Include line terminating Res RS485 Screened twisted pair RS485 Screened twisted pair Rear terminals Fig. : Typical RS485 connection The rear RS485 can be user selected to be OFF, IEC60870-5- 103, MODBUS RTU or optional DNP3.0 protocol. Reydisp Evolution Fig. 4: Typical Reydisp Manager screenshot Fig. 3: Typical Reydisp Evolution screenshot Reydisp Evolution is common to the entire range of Reyrolle numeric products. It provides the means for the user to apply settings interrogate settings and retrieve events and disturbance waveforms from the Duobias relay. Reydisp Evolution installation includes the Communications Editor to allow configuration of the serial protocol data points and options, the Curve Editor to allow programming of user defined TCC characteristics and the Language Editor to allow relay display text to be edited. This can be used to provide non- English language support using the European character set. Unrestricted Siemens Protection Devices Limited 6
Technical Data For full technical data refer to the Performance Specification Chapter of the Technical Manual. Allowable superimposed ac component Allowable breaks/dips in supply (collapse to zero from nominal voltage) 1% of dc voltage 0 ms Inputs and Outputs Current Inputs Quantity 6 x Phase & x Earth Rated Current IN 1/5A Measuring Range 80 x In Instrumentation 0.1xIn ±1% In Frequency /60Hz Thermal Withstand: Continuous 3.0 x In 10 Minutes 3.5 x In 5 Minutes 4.0 x In 3 Minutes 5.0 x In Minutes 6.0 x In 3 Seconds 57.7A (1A) 0A (5A) Seconds 70.7A (1A) 47A (5A) 1 Second 100A (1A) 3A (5A) 1 Cycle 700A (1A) 0A (5A) Burden @ In 0.1VA (1A phase and Earth element) 0.3VA (5A phase and earth element) Voltage Inputs Quantity Nominal Voltage Instrumentation 0.8xVn Thermal Withstand: Continuous 1 Second Burden @ 110V 1 (optional) 40-160V a.c. ±1% Vn 300V 0.1 VA Auxiliary supply Nominal voltage 4 - V dc 100-30V ac Operating Range 19. - 75 V dc 80-53 V ac Nominal Voltage Quiescent Burden (typical) Quiescent Burden (back-light) 4V dc 6.0W 7.4W 48V dc 5.8W 7.1W 60V dc 5.8W 7.0W 110V dc 6.5W 7.5W 15V dc 5.4W 1.W 0V dc 5.W 6.4W V dc 5.W 6.4W 100V ac 13.4VA 15.9VA 110V ac 13.7VA 16.VA 115V ac 13.7VA 16.VA 10V ac 14.0VA 16.6VA 00V ac 16.0VA 19.0VA 30V ac 17.0VA 0.VA Unrestricted Siemens Protection Devices Limited 7
Binary Inputs Operating Voltage Maximum dc current for operation 19V dc: Range 17 to 90V dc 88V dc: Range 74 to 90V dc 1.5mA Electrical Tests Insulation IEC 6055-5 Binary Outputs Operating Voltage Operating Mode Contact Operate / Release Time. Making Capacity: Carry continuously Make and carry (L/R 40 ms and V 300 V) Breaking Capacity ( 5 A and 300 V): AC Resistive AC Inductive DC Resistive DC Inductive Mechanical Tests Vibration (Sinusoidal) IEC 6055-1-1 Class I Voltage Free User selectable - Self or Hand Reset 7ms / 3ms 5A ac or dc 0A ac or dc for 0.5s 30A ac or dc for 0.s 1 VA VA at p.f. 0.4 75 W 30 W at L/R 40ms W at L/R 10ms Vibration response 0.5 gn 5 % Vibration endurance 1.0 gn 5 % Shock and Bump IEC 6055-1- Class I Shock response 5 gn, 11 ms 5 % Shock withstand 15 gn, 11 ms 5 % Bump test 10 gn, 16 ms 5 % Seismic IEC 6055-1-3 Class I Seismic response 1 gn 5 % Mechanical Classification Type Between any terminal and earth Between independent circuits Across normally open contacts Transient Overvoltage IEC 6055-5 Between all terminals and earth or between any two independent circuits High Frequency Disturbance IEC 6055--1 Class III Level.0 kv AC RMS for 1 min.0 kv AC RMS for 1 min 1.0 kv AC RMS for 1 min 5 kv 1./ µs 0.5 J Common.5 kv 5 % (longitudinal) mode Series (transverse) mode 1.0 kv 5 % Electrostatic Discharge IEC 6055-- Class IV Contact discharge 8.0 kv 5 % Fast Transients IEC 6055--4 Class IV 5/ ns.5 khz 4kV 5 % repetitive Surge Immunity IEC 6055--5 Between all 4.0 kv 10 % terminals and earth Between any two independent circuits.0kv Durability >10 6 operations Conducted Radio Frequency Interference IEC 6055--6 0.15 to 80 MHz 10 V 5 % Unrestricted Siemens Protection Devices Limited 8
Radiated Radio Frequency IEC 6055-5 Type Limits at 10 m, Quasi-peak 30 to 30 MHz 40 db(µv) 30 to 10000 MHz 47 db(µv) Conducted Radio Frequency Type Limits Quasi-peak Average 0.15 to 0.5 MHz 79 db(µv) 66 db(µv) 0.5 to 30 MHz 73 db(µv) 60 db(µv) Radiated Immunity IEC 6055--3 Class III 80 MHz to 1000 10 V/m 5 % MHz Magnetic Field with Power Frequency IEC 61000-4-8, Class V 100 A/m continuous Hz; 1.57mT 1000 A/m for 3s Climatic Tests Temperature IEC 60068--1/ Operating Range -10 C to +55 C Storage range -5 C to +70 C Humidity IEC 60068--3 Operational test 56 days at 40 C and 93 % relative humidity IP Ratings Type Installed with cover Installed with cover removed Level IP 51 from front of relay IP 0 from front of relay Unrestricted Siemens Protection Devices Limited 9
Performance 7/59 Under/Over Voltage Number of Elements Setting Range Vs Hysteresis Setting Vs Operate Level Reset Level: Undervoltage Overvoltage Delay Setting td Basic Operate Time : 0 to 1.1xVs 0 to.0xvs 1.1 to 0.5xVs Operate time following delay. 37, 37G Undercurrent 4 Under or Over 5, 5.5 00V 0. 0.1 80% 100% Vs, ±1% or ±0.5V (100% + hyst) x Vop, ±1% or 0.5V (100% - hyst) x Vop, ±1% or 0.5V 0.00, 0.01 0, 0.5 100, 101 1000, 1010 10000, 10100 14400s 73ms ±10ms 63ms ±10ms 58ms ±10ms Tbasic + td, ±1% or ±10ms U/V Guard Number of Elements Phase (37) x Earth (37G) x Setting Range Is 0.05, 0.10 5.0 x In Operate Level 100% Is, ±5% or ±1%xIn Delay Setting td 0.00, 0.01 0, 0.5 100, 101 1000, 1010 10000, 10100 14400s Basic Operate Time: 35ms ±10ms 1.1 to 0.5xIn Operate time following Tbasic + td, ±1% or ±10ms delay. Overshoot Time < 40ms U/I Guard (37) 46 Negative Phase Sequence Overcurrent Number of Elements DT Setting Range Is DT Operate Level DT Delay Setting td DT Basic Operate Time: 0 to x Is DT Operate time following delay. IT Char Setting DT & IT 0.05, 0.06 4.0 x In 100% Is, ±5% or ±1%xIn 0.00, 0.01 0, 0.5 100, 101 1000, 1010 10000, 10100 14400s 40ms ±10ms Tbasic + td, ±1% or ±10ms IEC: NI,VI,EI,LTI ANSI: MI,VI,EI DTL IT Setting Range 0.05, 0.06...5 Tm Time Multiplier Char Operate Level Overshoot Time 49 Thermal Overload Operate levels Setting Range Is Operate Level Time Constant Setting Operate time Alarm Level Instantaneous & DTL OC&EF 0.05, 0.0 1.6 105% Is, ±4% or ±1%In < 40ms Operate and Alarm 0.10, 0.11 3.0 x In 100% Is, ±5% or ±1%xIn 1,1.5 1000min I I p t = τ In ( ) I k I B ±5% absolute or ±100ms where Ip = prior current Disabled,,51 100% Elements Phase (OC), Derived Earth (N) and Measured Earth (G) Number of Elements x OC x Derived EF (N) x Measured EF (G) Setting Range Is 0.05,0.06 x In (OC, N) 0.005 5 x In (G) Time Delay 0.00 14400s Operate Level 100% Is, ±5% or ±1% x In Operate time:, G 0 to xis 35ms, ±10ms, 0 to 5xIs 5ms, ±10ms N 0 to xis 40ms, ±10ms, 0 to 5xIs 30ms, ±10ms Operate time following Tbasic + td, ±1% or ±10ms delay Inrush detector Unrestricted Siemens Protection Devices Limited 10
51Time Delayed OC&EF) Elements Phase (OC), Derived Earth (N) and Measured Earth (G) Number of Elements x OC x Derived EF (N) 4 x Measured EF (G) Characteristic IEC: NI,VI,EI,LTI ANSI: MI,VI,EI DTL Setting Range Is 0.05, 0.1.5 x In (OC, N) 0.005, 0.01 1.0 x In (G) Time Multiplier 0.05,0.05 1.6 Time Delay 0, 0.01 0s Operate Level 105% Is, ±4% or ±1%xIn Minimum Operate time K top = Tm I α IEC [ ] 1 ANSI Follower Delay Reset BF Circuit Breaker Fail Is A top = + B Tm P [ Is I ] 1 ± 5 % absolute or ± 30 ms 0-0s ANSI decaying, 0 60s Inrush detector Operation Current check Setting Range Is 0.05,0.055.0 x In (Phase) 0.005,0.010.0 x In (Earth) Stage Time Delays Timer 1 0,5 60000ms Timer 0,5 60000ms Operate Level 100% Is, ±5% or ±1%xIn Basic Operate time < 0ms Operate time following Tdelay ±1% or ±10ms delay Triggered by Any function mapped as trip contact. 59N Neutral Voltage Displacement Number of Elements DT & IT DT Setting Range Is 1 100V DT Operate Level 100% Vs, ±5% or ±1%xVn DT Delay Setting td 0 14400s DT Basic Operate Time 76ms ±0ms 0V to 1.5xVs DT Operate time Tbasic + td, ±1% or ±0ms following delay. IT Setting Range 1 100V Tm Time 0.1 140 Multiplier(IDMT) Delay (DTL) 0 0s Reset ANSI Decaying, 0 60s Char Operate Level 105% Vs, ±% or ± 0.5V 64H Restricted Earth Fault Setting Range Operate Level Time Delay Basic Operate Time 74TCS Trip Circuit Supervision Number of supervisable circuits Number of BI s Required Under/Over Frequency Number of Elements Setting Range Vs Hysteresis Setting Vs Operate Level Reset Level: Over frequency Under frequency Delay Setting td Basic Operate Time : (for ROCOF between 0.1 and 5.0 Hz/sec) Operate time following delay. 87BD Biased Differential 0.005 0.95xIn 100% Is, ±5% or ±1%xIn 0.00 14400s 0 to x Is: 45ms ±10ms 0 to 5 x Is: 35ms ±10ms 6 1 or per function 6 Under or Over 40 69.99Hz 0. 0.1 80% 100% Fs, ±10mHz (100% - hyst) x Fop, ±10mHz (100% + hyst) x Fop, ±10mHz 0.00, 0.01 0, 0.5 100, 101 1000, 1010 10000, 10100 14400s Typically <110ms Maximum <1ms Tbasic + td, ±1% or ±10ms Number of Elements 1 Setting Range Initial 0.1, 0.15 x In 1 st Bias Slope 0.1, 0.15 0.7x 1 st Bias Slope Limit 1, 0 x In nd Bias Slope 1, 1.5 x nd Bias Slope Type Line, curve Operate Level: Initial setting Bias slope Reset Level: Over frequency Under frequency Delay Setting td Basic Operate Time : (inrush action Enabled) 0 to 3 x IOP 0 to 10 x IOP Operate time following delay. ±5% of setting or ±0.01 In ±10% of setting or ±0.01 In (100% - hyst) x Fop, ±10mHz (100% + hyst) x Fop, ±10mHz 0.000, 0.005 1s 35ms ±10ms 30ms ±10ms Tbasic + td, ±1% or ±10ms Unrestricted Siemens Protection Devices Limited 11
Case Dimensions 07.5 FRONT Optional ethernet comms module 01.5 Case Earth connection See note 177 E8 FRONT VIEW TOP VIEW 168 E8 PANEL CUT-OUT 159 9.75 18 Diameter 3.6-4 holes (see note 1) 60 Case Earth connection 5.5 177 E10 FRONT VIEW TOP VIEW 168 E10 PANEL CUT-OUT 159 9.5 74.5 178.5 43.5 Diameter 3.6-8 holes (see note 1) 311.5 304.5 Case Earth connection 177 E1 FRONT VIEW TOP VIEW 168 E1 PANEL CUT-OUT 159 9.5 100.5 04.5 95.5 11 Typical when fitted 54.5 31 16.5 Case Earth connection SIDE VIEW 5mm MIN CLEARANCE FOR TERMINAL WIRING 70mm MIN CLEARANCE FOR F/O COMMS CABLE Optional ethernet comms module 151.5 75mm MIN CLEARANCE BELOW EN100 MODULE FOR ETHERNET COMMS CONNECTIONS NOTES: Diameter 3.6-8 holes (see note 1) 1) THE 3.6 HOLES ARE FOR M4 THREAD FORMING (TRILOBULAR) SCREWS. THESE ARE SUPPLIED AS STANDARD AND ARE SUITABLE FOR USE IN FERROUS / ALUMINIUM PANELS 1.6mm THICK AND ABOVE. FOR OTHER PANELS, HOLES TO BE M4 CLEARANCE (TYPICALLY 4.5 DIAMETER) AND RELAYS MOUNTED USING M4 MACHINE SCREWS, NUTS AND LOCKWASHERS (SUPPLIED IN PANEL FIXING KIT). ) ACCESS CLEARANCE REQUIRED FOR OPTIONAL ETHERNET COMMS MODULE RETAINING SCREW Fig. 5: 7SR4 Case Dimensions Unrestricted Siemens Protection Devices Limited 1
7SR4 Connection Diagram Rear View: Arrangement of terminals and modules 1 1 1 1 1 4 8 GND. 7SR4 BO 1 1 3 5 E Optional I/O 7 8 D Optional I/O 7 8 C PSU 7 8 B CT 7 8 A CT/VT 7 8 Data Comms (Optional) BO 7 4 6 8 10 1 14 16 18 0 A Screen B Term. RS485 BI 1 BI BI 3 C BO 3 BO 4 BO 5 BO 6 9 11 13 15 17 19 1 3 5 6 7 4 6 8 10 1 14 BI 0 BI 1 BI BI 3 BI 4 BI 30 BI 31 BI 3 BI 33 BI 34 1 3 5 7 9 11 13 18 0 4 6 8 17 19 1 3 5 7 1 1A BI 4 BI 5 BI 6 BI 7 BI 8 BI 9 B W-Ia W-Ib W-Ic 1A 5A 1A 5A 1A 5A 1 3 4 5 6 7 8 9 10 11 1 17 16 18 0 4 6 8 4 BI 5 BI 6 BI 7 BI 8 BI 9 BI 10 E BI 35 BI 36 BI 37 BI 38 BI 39 BO 7 15 17 19 1 3 5 7 1 3 3 5A W1-Ia Ig- 5A 18 19 6 8 BI 11 BO 8 5 7 4 5 1A 0 10 BI 1 BO 9 9 11 6 7 8 9 10 11 1 13 5A 1A 5A 1A W1-Ib W1-Ic V 7 8 1 14 16 18 0 BI 13 BI 14 BI 15 BI 16 BO 10 BO 11 BO 1 BO 13 BO 14 13 15 17 19 1 3 5 7 14 15 16 5A Ig-1 A 4 BI 17 BI 18 NOTES BI = Binary Input BO = Binary Output Shows contacts internal to relay case assembly. Contacts close when the relay chassis is withdrawn from case 6 8 BI 19 D Fig. 6: 7SR4 Wiring Diagram Unrestricted Siemens Protection Devices Limited 13
7SR4 Function diagram / example of external connections 7SR4n-aAn1-0CA0 W1-Ia 37 51 (x) BF-1 (x) (x) 49 HBL HBL5 W1-Ib 37 (x) BF-1 (x) 51 (x) 49 HBL HBL5 W1-Ic 37 (x) BF-1 (x) 51 (x) 49 HBL HBL5 N (x) 51N (x) 46 BC (x) 46 NPS (x4) Ig-1 37G (x) BF-1 I4 G (x) 51G (x4) 64H Each function element can be assigned to W1 or W CT inputs. ICT NOTE: The use of some functions are mutually exclusive 87HS 87BD ICT Ig- 37G BF- I4 G 51G 64H N 51N 46 BC 46 NPS 74 CCS (x6) 74 TCS (x6) W-Ic 37 51 49 BF- HBL HBL5 W-Ib 37 51 49 BF- HBL HBL5 W-Ia 37 51 49 BF- HBL HBL5 V 4 (x3) 7 59 (x4) 59N (x) (x6) Fig. 7: Standard and Optional Functionality of 7SR4 Relay Unrestricted Siemens Protection Devices Limited 14
Ordering Information 7SR4 Winding Transformer Protection Product description Variants Order No. Duobias 7 S R 4 - A - 0 A 0 Multifunctional winding transformer differential Protection Product protection Transformer 4 Relay Type Differential ( winding) Case I/O and Fascia E8 case, 6 CT, EF/REF CT, 1 VT, 9 Binary Inputs / 6 Binary Outputs, 16 LEDs E10 case, 6 CT, EF/REF CT, 1 VT, 19 Binary Inputs / 14 Binary Outputs, 3 4 LEDs E1 case, 6 CT, EF/REF CT, 1 VT, 39 Binary Inputs / 14 Binary Outputs, 4 3 LEDs Measuring Input 1/5 A, 40/160V, /60Hz Auxiliary voltage 4-V DC / 100-30V AC. Binary input threshold 19V DC M 4-V DC / 100-30V AC. Binary input threshold 88V DC N Communication Interface Standard version included in all models, USB front port, RS485 rear port 1 Standard version plus additional rear F/O ST connectors (x) and IRIG-B Standard version plus additional rear RS485 (x1) and IRIG-B 3 Standard version plus additional rear RS3 (x1) and IRIG-B 4 Standard version plus additional rear Electrical Ethernet RJ45 (x) 7 Standard version plus additional rear Optical Ethernet Duplex (x) 8 Protocol IEC 60870-5-103 and Modbus RTU (user selectable setting) 1 IEC 60870-5-103 and Modbus RTU and DNP 3.0 (user selectable) IEC 60870-5-103 and Modbus RTU and DNP 3.0 (user selectable) and IEC618 7-8 7 Protection Function Packages Option A: - HBL Inrush Detector - HBL5 Overfluxing detector - 87BD Biased current differential - 87HS Current differential highset Programmable logic For each winding/circuit breaker - BF Circuit breaker fail - 64H High impedance REF - 74TCS/CCS Trip/Close circuit supervision Standard version Included in all models Option B: Standard version plus - 37/37G Undercurrent - 46BC Open circuit - 46NPS Negative phase sequence overcurrent - 49 Thermal overload - Instantaneous phase fault overcurrent - G/N Instantaneous earth fault - 51 Time delayed phase fault overcurrent - 51G/51N Time delayed earth fault (continued on following page ) A B Unrestricted Siemens Protection Devices Limited 15
Ordering Information 7SR4 Winding Transformer Protection Product description Variants Order No. Duobias 7 S R 4 - A - 0 A 0 (continued from previous Option C: Standard version - plus C page) - 4 Overfluxing - 7/59 Under/overvoltage - 59N Neutral voltage displacement - Under/overfrequency - 37/37G Undercurrent - 46BC Open circuit - 46NPS Negative phase sequence overcurrent - 49 Thermal overload - Instantaneous phase fault overcurrent - G/N Instantaneous earth fault - 51 Time delayed phase fault overcurrent - 51G/51N Time delayed earth fault Additional Functionality No Additional Functionality A 1 ) For ESI48-4 compliance of binary inputs external resistors are required see Technical Manual. Unrestricted Siemens Protection Devices Limited 16
Published by and copyright 017: Siemens Protection Devices Limited P.O. Box 8 North Farm Road Hebburn Tyne & Wear NE31 1TZ United Kingdom Phone: +44 (0)191 401 7901 Fax: +44 (0)191 401 5575 E-mail: marketing.spdl.gb@siemens.com EMEA-C10035-00-76GB December 017 For enquires please contact our Customer Support Center Phone: +49 180/54 8437 (4hrs) Fax: +49 180/54 4 71 E-mail: support.energy@siemens.com www.siemens.com/protection Subject to change without notice, Printed in the UK. www. siemens.com/reyrolle Unrestricted Siemens Protection Devices Limited 17